Errata 2.3.1 7-26-17 pg 25-26
"but increase their area of effect radius over standard rounds from the same artillery weapon type to the 6” AoE template, or an additional 2” from the edge of the 6” AoE template if the standard round already used a 6” AoE template."
② Left column, replace the second paragraph on the page with the following:
This ruling has changed from previous errata versions.
The damage from cluster artillery is based on a weapon‘s standard artillery damage, but is reduced by 1 point. This modified damage applies to all targets within the original AoE template. For targets outside the original template but within the expanded AoE template, the cluster artillery delivers half its modified damage (rounded down). Damage reduced from 1 to 0 in this way, whether in the original AoE template or in the expanded AoE template, is instead reduced to 0* (see Minimal Damage, p. 38). Thus, a cluster shot from an ART-LT weapon, which ordinarily inflicts 3 damage to the point of impact, would be reduced to 2 points of damage to all targets with the 6” AoE template, and 0* damage to all targets within the additional 2” of the edge of the 6” AoE template.
So, an Arrow IV has an original template of 2" and 2 damage, shooting a cluster munition. So it's new AoE template is now 6" and damage is reduced to 1. Any damage outside that 2" original template is now 0* correct?